Likewise, TOI-1201 b is ideal for low-to-mid-resolution ground-based transit spectroscopy covering the optical regime, serving as a great complement to the expected near- and mid-IR wavelength range measurements from JWST. These ground-based observations are typically challenging due to strong atmospheric and instrumental variations [1]}, [2]}, [3]}, [4]}, [5]}, [6]}. Companion stars that are close in brightness and space to the target star help mitigate these effects since both stars experience a similar path through the Earth's atmosphere and the instrument, allowing the effects from the target star to be monitored and removed. In this regard, the binary companion PM J02489–1432E, which has very similar stellar properties (see Table REF ), is a perfect star to detrend atmospheric and instrumental effects from TOI-1201's light curve.
